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annotate org.eclipse.text/src/org/eclipse/jface/text/Position.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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children 5feec68b4556
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bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.jface.text.Position;
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14
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15 import org.eclipse.jface.text.IDocumentPartitioningListener; // packageimport
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16 import org.eclipse.jface.text.DefaultTextHover; // packageimport
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17 import org.eclipse.jface.text.AbstractInformationControl; // packageimport
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18 import org.eclipse.jface.text.TextUtilities; // packageimport
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19 import org.eclipse.jface.text.IInformationControlCreatorExtension; // packageimport
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20 import org.eclipse.jface.text.AbstractInformationControlManager; // packageimport
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21 import org.eclipse.jface.text.ITextViewerExtension2; // packageimport
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22 import org.eclipse.jface.text.IDocumentPartitioner; // packageimport
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23 import org.eclipse.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport
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24 import org.eclipse.jface.text.ITextSelection; // packageimport
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25 import org.eclipse.jface.text.Document; // packageimport
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26 import org.eclipse.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport
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27 import org.eclipse.jface.text.ITextListener; // packageimport
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28 import org.eclipse.jface.text.BadPartitioningException; // packageimport
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29 import org.eclipse.jface.text.ITextViewerExtension5; // packageimport
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30 import org.eclipse.jface.text.IDocumentPartitionerExtension3; // packageimport
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31 import org.eclipse.jface.text.IUndoManager; // packageimport
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32 import org.eclipse.jface.text.ITextHoverExtension2; // packageimport
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33 import org.eclipse.jface.text.IRepairableDocument; // packageimport
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34 import org.eclipse.jface.text.IRewriteTarget; // packageimport
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35 import org.eclipse.jface.text.DefaultPositionUpdater; // packageimport
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36 import org.eclipse.jface.text.RewriteSessionEditProcessor; // packageimport
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37 import org.eclipse.jface.text.TextViewerHoverManager; // packageimport
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38 import org.eclipse.jface.text.DocumentRewriteSession; // packageimport
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39 import org.eclipse.jface.text.TextViewer; // packageimport
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40 import org.eclipse.jface.text.ITextViewerExtension8; // packageimport
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41 import org.eclipse.jface.text.RegExMessages; // packageimport
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42 import org.eclipse.jface.text.IDelayedInputChangeProvider; // packageimport
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43 import org.eclipse.jface.text.ITextOperationTargetExtension; // packageimport
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44 import org.eclipse.jface.text.IWidgetTokenOwner; // packageimport
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45 import org.eclipse.jface.text.IViewportListener; // packageimport
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46 import org.eclipse.jface.text.GapTextStore; // packageimport
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47 import org.eclipse.jface.text.MarkSelection; // packageimport
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48 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension; // packageimport
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49 import org.eclipse.jface.text.IDocumentAdapterExtension; // packageimport
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50 import org.eclipse.jface.text.IInformationControlExtension; // packageimport
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51 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2; // packageimport
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52 import org.eclipse.jface.text.DefaultDocumentAdapter; // packageimport
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53 import org.eclipse.jface.text.ITextViewerExtension3; // packageimport
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54 import org.eclipse.jface.text.IInformationControlCreator; // packageimport
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55 import org.eclipse.jface.text.TypedRegion; // packageimport
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56 import org.eclipse.jface.text.ISynchronizable; // packageimport
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57 import org.eclipse.jface.text.IMarkRegionTarget; // packageimport
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58 import org.eclipse.jface.text.TextViewerUndoManager; // packageimport
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59 import org.eclipse.jface.text.IRegion; // packageimport
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60 import org.eclipse.jface.text.IInformationControlExtension2; // packageimport
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61 import org.eclipse.jface.text.IDocumentExtension4; // packageimport
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62 import org.eclipse.jface.text.IDocumentExtension2; // packageimport
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63 import org.eclipse.jface.text.IDocumentPartitionerExtension2; // packageimport
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64 import org.eclipse.jface.text.DefaultInformationControl; // packageimport
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65 import org.eclipse.jface.text.IWidgetTokenOwnerExtension; // packageimport
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66 import org.eclipse.jface.text.DocumentClone; // packageimport
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67 import org.eclipse.jface.text.DefaultUndoManager; // packageimport
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68 import org.eclipse.jface.text.IFindReplaceTarget; // packageimport
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69 import org.eclipse.jface.text.IAutoEditStrategy; // packageimport
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70 import org.eclipse.jface.text.ILineTrackerExtension; // packageimport
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71 import org.eclipse.jface.text.IUndoManagerExtension; // packageimport
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72 import org.eclipse.jface.text.TextSelection; // packageimport
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73 import org.eclipse.jface.text.DefaultAutoIndentStrategy; // packageimport
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74 import org.eclipse.jface.text.IAutoIndentStrategy; // packageimport
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75 import org.eclipse.jface.text.IPainter; // packageimport
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76 import org.eclipse.jface.text.IInformationControl; // packageimport
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77 import org.eclipse.jface.text.IInformationControlExtension3; // packageimport
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78 import org.eclipse.jface.text.ITextViewerExtension6; // packageimport
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79 import org.eclipse.jface.text.IInformationControlExtension4; // packageimport
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80 import org.eclipse.jface.text.DefaultLineTracker; // packageimport
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81 import org.eclipse.jface.text.IDocumentInformationMappingExtension; // packageimport
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82 import org.eclipse.jface.text.IRepairableDocumentExtension; // packageimport
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83 import org.eclipse.jface.text.ITextHover; // packageimport
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84 import org.eclipse.jface.text.FindReplaceDocumentAdapter; // packageimport
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85 import org.eclipse.jface.text.ILineTracker; // packageimport
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86 import org.eclipse.jface.text.Line; // packageimport
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87 import org.eclipse.jface.text.ITextViewerExtension; // packageimport
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88 import org.eclipse.jface.text.IDocumentAdapter; // packageimport
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89 import org.eclipse.jface.text.TextEvent; // packageimport
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90 import org.eclipse.jface.text.BadLocationException; // packageimport
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91 import org.eclipse.jface.text.AbstractDocument; // packageimport
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92 import org.eclipse.jface.text.AbstractLineTracker; // packageimport
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93 import org.eclipse.jface.text.TreeLineTracker; // packageimport
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94 import org.eclipse.jface.text.ITextPresentationListener; // packageimport
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95 import org.eclipse.jface.text.Region; // packageimport
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96 import org.eclipse.jface.text.ITextViewer; // packageimport
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97 import org.eclipse.jface.text.IDocumentInformationMapping; // packageimport
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98 import org.eclipse.jface.text.MarginPainter; // packageimport
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99 import org.eclipse.jface.text.IPaintPositionManager; // packageimport
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100 import org.eclipse.jface.text.TextPresentation; // packageimport
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101 import org.eclipse.jface.text.IFindReplaceTargetExtension; // packageimport
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102 import org.eclipse.jface.text.ISlaveDocumentManagerExtension; // packageimport
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103 import org.eclipse.jface.text.ISelectionValidator; // packageimport
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104 import org.eclipse.jface.text.IDocumentExtension; // packageimport
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105 import org.eclipse.jface.text.PropagatingFontFieldEditor; // packageimport
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106 import org.eclipse.jface.text.ConfigurableLineTracker; // packageimport
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107 import org.eclipse.jface.text.SlaveDocumentEvent; // packageimport
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108 import org.eclipse.jface.text.IDocumentListener; // packageimport
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109 import org.eclipse.jface.text.PaintManager; // packageimport
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110 import org.eclipse.jface.text.IFindReplaceTargetExtension3; // packageimport
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111 import org.eclipse.jface.text.ITextDoubleClickStrategy; // packageimport
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112 import org.eclipse.jface.text.IDocumentExtension3; // packageimport
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113 import org.eclipse.jface.text.TextMessages; // packageimport
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114 import org.eclipse.jface.text.CopyOnWriteTextStore; // packageimport
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115 import org.eclipse.jface.text.WhitespaceCharacterPainter; // packageimport
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116 import org.eclipse.jface.text.IPositionUpdater; // packageimport
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117 import org.eclipse.jface.text.DefaultTextDoubleClickStrategy; // packageimport
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118 import org.eclipse.jface.text.ListLineTracker; // packageimport
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119 import org.eclipse.jface.text.ITextInputListener; // packageimport
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120 import org.eclipse.jface.text.BadPositionCategoryException; // packageimport
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121 import org.eclipse.jface.text.IWidgetTokenKeeperExtension; // packageimport
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122 import org.eclipse.jface.text.IInputChangedListener; // packageimport
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123 import org.eclipse.jface.text.ITextOperationTarget; // packageimport
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124 import org.eclipse.jface.text.IDocumentInformationMappingExtension2; // packageimport
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125 import org.eclipse.jface.text.ITextViewerExtension7; // packageimport
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126 import org.eclipse.jface.text.IInformationControlExtension5; // packageimport
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127 import org.eclipse.jface.text.IDocumentRewriteSessionListener; // packageimport
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128 import org.eclipse.jface.text.JFaceTextUtil; // packageimport
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129 import org.eclipse.jface.text.AbstractReusableInformationControlCreator; // packageimport
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130 import org.eclipse.jface.text.TabsToSpacesConverter; // packageimport
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131 import org.eclipse.jface.text.CursorLinePainter; // packageimport
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132 import org.eclipse.jface.text.ITextHoverExtension; // packageimport
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133 import org.eclipse.jface.text.IEventConsumer; // packageimport
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134 import org.eclipse.jface.text.IDocument; // packageimport
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135 import org.eclipse.jface.text.IWidgetTokenKeeper; // packageimport
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136 import org.eclipse.jface.text.DocumentCommand; // packageimport
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137 import org.eclipse.jface.text.TypedPosition; // packageimport
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138 import org.eclipse.jface.text.IEditingSupportRegistry; // packageimport
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139 import org.eclipse.jface.text.IDocumentPartitionerExtension; // packageimport
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140 import org.eclipse.jface.text.AbstractHoverInformationControlManager; // packageimport
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141 import org.eclipse.jface.text.IEditingSupport; // packageimport
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142 import org.eclipse.jface.text.IMarkSelection; // packageimport
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143 import org.eclipse.jface.text.ISlaveDocumentManager; // packageimport
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144 import org.eclipse.jface.text.DocumentEvent; // packageimport
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145 import org.eclipse.jface.text.DocumentPartitioningChangedEvent; // packageimport
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146 import org.eclipse.jface.text.ITextStore; // packageimport
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147 import org.eclipse.jface.text.JFaceTextMessages; // packageimport
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148 import org.eclipse.jface.text.DocumentRewriteSessionEvent; // packageimport
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149 import org.eclipse.jface.text.SequentialRewriteTextStore; // packageimport
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150 import org.eclipse.jface.text.DocumentRewriteSessionType; // packageimport
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151 import org.eclipse.jface.text.TextAttribute; // packageimport
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152 import org.eclipse.jface.text.ITextViewerExtension4; // packageimport
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153 import org.eclipse.jface.text.ITypedRegion; // packageimport
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154
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155
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156 import java.lang.all;
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157 import java.util.Set;
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158
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159 import org.eclipse.core.runtime.Assert;
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160
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161
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162 /**
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163 * Positions describe text ranges of a document. Positions are adapted to
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164 * changes applied to that document. The text range is specified by an offset
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165 * and a length. Positions can be marked as deleted. Deleted positions are
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166 * considered to no longer represent a valid text range in the managing
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167 * document.
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168 * <p>
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169 * Positions attached to documents are usually updated by position updaters.
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170 * Because position updaters are freely definable and because of the frequency
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171 * in which they are used, the fields of a position are made publicly
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172 * accessible. Clients other than position updaters are not allowed to access
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173 * these public fields.
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174 * </p>
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175 * <p>
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176 * Positions cannot be used as keys in hash tables as they override
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177 * <code>equals</code> and <code>hashCode</code> as they would be value
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178 * objects.
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179 * </p>
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180 *
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181 * @see org.eclipse.jface.text.IDocument
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182 */
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183 public class Position {
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184
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185 /** The offset of the position */
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186 public int offset;
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187 /** The length of the position */
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188 public int length;
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189 /** Indicates whether the position has been deleted */
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190 public bool isDeleted_;
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191
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192 /**
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193 * Creates a new position with the given offset and length 0.
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194 *
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195 * @param offset the position offset, must be >= 0
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196 */
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197 public this(int offset) {
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198 this(offset, 0);
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199 }
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200
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201 /**
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202 * Creates a new position with the given offset and length.
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203 *
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204 * @param offset the position offset, must be >= 0
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205 * @param length the position length, must be >= 0
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206 */
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207 public this(int offset, int length) {
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208 Assert.isTrue(offset >= 0);
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209 Assert.isTrue(length >= 0);
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210 this.offset= offset;
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211 this.length= length;
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212 }
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213
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214 /**
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215 * Creates a new, not initialized position.
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216 */
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217 protected this() {
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218 }
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219
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220 /*
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221 * @see java.lang.Object#hashCode()
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222 */
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223 public override hash_t toHash() {
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224 int deleted= isDeleted_ ? 0 : 1;
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225 return (offset << 24) | (length << 16) | deleted;
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226 }
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227
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228 /**
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229 * Marks this position as deleted.
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230 */
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231 public void delete_() {
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232 isDeleted_= true;
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233 }
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234
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235 /**
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236 * Marks this position as not deleted.
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237 *
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238 * @since 2.0
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239 */
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240 public void undelete() {
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241 isDeleted_= false;
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242 }
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243
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244 /*
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245 * @see java.lang.Object#equals(java.lang.Object)
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246 */
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247 public override int opEquals(Object other) {
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248 if ( auto rp = cast(Position)other ) {
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249 return (rp.offset is offset) && (rp.length is length);
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250 }
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251 return super.opEquals(other);
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252 }
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253
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254 /**
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255 * Returns the length of this position.
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256 *
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257 * @return the length of this position
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258 */
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259 public int getLength() {
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260 return length;
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261 }
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262
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263 /**
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264 * Returns the offset of this position.
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265 *
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266 * @return the offset of this position
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267 */
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268 public int getOffset() {
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269 return offset;
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270 }
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271
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272 /**
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273 * Checks whether the given index is inside
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274 * of this position's text range.
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275 *
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276 * @param index the index to check
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277 * @return <code>true</code> if <code>index</code> is inside of this position
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278 */
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279 public bool includes(int index) {
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280
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281 if (isDeleted_)
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282 return false;
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283
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284 return (this.offset <= index) && (index < this.offset + length);
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285 }
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286
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287 /**
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288 * Checks whether the intersection of the given text range
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289 * and the text range represented by this position is empty
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290 * or not.
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291 *
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292 * @param rangeOffset the offset of the range to check
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293 * @param rangeLength the length of the range to check
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294 * @return <code>true</code> if intersection is not empty
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295 */
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296 public bool overlapsWith(int rangeOffset, int rangeLength) {
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297
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298 if (isDeleted_)
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299 return false;
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300
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301 int end= rangeOffset + rangeLength;
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302 int thisEnd= this.offset + this.length;
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303
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304 if (rangeLength > 0) {
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305 if (this.length > 0)
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306 return this.offset < end && rangeOffset < thisEnd;
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307 return rangeOffset <= this.offset && this.offset < end;
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308 }
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309
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310 if (this.length > 0)
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311 return this.offset <= rangeOffset && rangeOffset < thisEnd;
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312 return this.offset is rangeOffset;
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313 }
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314
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315 /**
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316 * Returns whether this position has been deleted or not.
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317 *
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318 * @return <code>true</code> if position has been deleted
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319 */
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320 public bool isDeleted() {
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321 return isDeleted_;
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322 }
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323
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324 /**
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325 * Changes the length of this position to the given length.
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326 *
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327 * @param length the new length of this position
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328 */
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329 public void setLength(int length) {
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330 Assert.isTrue(length >= 0);
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331 this.length= length;
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332 }
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333
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334 /**
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335 * Changes the offset of this position to the given offset.
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336 *
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337 * @param offset the new offset of this position
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338 */
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339 public void setOffset(int offset) {
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340 Assert.isTrue(offset >= 0);
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341 this.offset= offset;
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342 }
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343 }